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World's largest sodium-ion battery goes into operation - Energy Storage
(www.ess-news.com)
This is a most excellent place for technology news and articles.
Sounds like a way to waste loads of money and keep people on fossil fuels.
Must be way cheaper to build more batteries and build out inertia. (Would still need backup power at this point though).
Reminds me of Elon's Hyperloop. Not intended to actually work, but instead be a distraction to deflate interest in public transportation.